WO2020226245A1

WO2020226245A1 - Wireless hairdryer

Info

Publication number: WO2020226245A1
Application number: PCT/KR2019/015028
Authority: WO
Inventors: 정영진; 정재우; 송현준
Original assignee: 숭실대학교산학협력단
Priority date: 2019-05-08
Filing date: 2019-11-07
Publication date: 2020-11-12
Also published as: US20210289907A1; JP7292374B2; US11641918B2; JP2021532937A; EP3970556A1; CN113015459A; EP3970556A4; KR102039504B1

Abstract

According to an embodiment of the present invention, provided is a wireless hairdryer comprising: a housing including a body portion and a head portion provided with a blower pipe therein; a battery arranged in the body portion; a blowing fan at an end of the head portion; a support inserted into an opposite end of the head portion to be fixed in the blowing fan; and a planar heating element which includes a carbon-nanotube sheet and is arranged on the support to receive the electric power from the battery and to generate heat.

Description

Cordless hair dryer

An embodiment of the present invention relates to a wireless hair dryer.

In a conventional hair dryer, when the power plug is connected to the power terminal and the power switch is turned on, power is applied to a heating wire such as a plate-shaped or spring-wound tungsten coil, iron chromium wire, or nichrome wire, and the heating wire starts to generate heat. At the same time, power is also applied to the fan motor mounted on the rear end of the main body so that the fan mounted on the fan motor starts driving, and when the fan is driven, air is sucked into the body through the intake port, and the sucked air Is converted into hot air while passing through the heater and is discharged to the outside through the discharge port, so that the user can dry the hair or set the desired hair shape.

Such, conventional hair drying has a problem that only the outside of the hair is heated so that the inner part of the hair that does not reach the hot air is not well dried. In addition, when hot air from a hair dryer is applied to one part of the hair for a long time to dry the inner part of the hair, there is a problem in that the hair is damaged by the hot air at high temperature. In addition, since the efficiency of the heating wire generating the hot air is low, it consumes a lot of electricity, so it has been difficult to implement a wireless hair dryer using a battery.

On the other hand, modern hair dryers are demanding various additional requirements in addition to the original function of drying hair. These requirements include 1) improving hair health and 2) saving energy.

Light in the 3㎛~1,000㎛ wavelength range is called far-infrared ray (IR-C), and it is generally known that far-infrared ray has a heating effect, drying, biological effect, water activation, aging and growth promotion, penetration, and radiation. On the other hand, the human body is a kind of natural heat source with an average body temperature of 36.5℃, and 46% of the total radiated energy radiated from the human body is far infrared rays with a wavelength of 8㎛-14㎛. Various attempts such as supplying anions or emitting far-infrared rays have been made in order to improve the health of the hair, and various means are being used to emit negative ions or far-infrared rays. PCT/JP2001/011284 discloses a hair dryer in which negative ions are released.

Meanwhile, as a prior art using carbon as a heating element, Republic of Korea Publication No. 2007-0094041 is a technology that protects hair by generating negative ions and far-infrared rays by having a tubular ceramic heater coated with a heating material and an electrode material inside the hair dryer body. It is disclosed. This technology is applying carbon to hair dryers by coating a heat source including carbon on a ceramic heater.

In addition, Japanese Utility Model No. 3011964 discloses a hair dryer that coats a hair dryer with a coating agent that emits far-infrared rays or attaches a carbon molded body to discharge hot air accompanying far-infrared rays from a through hole to the outside. In this technology, the carbon molded body is not used as a heating source, but air heated by a heating heater passes through the carbon molded body, so that the amount of far-infrared rays is reduced.

In addition, the Republic of Korea Utility Model No. 20-0369381 and the Republic of Korea Utility Model No. 20-0364340 disclose a hair dryer equipped with a carbon fiber heater to dry hair simultaneously by convection heating and infrared radiation heating. This technology uses carbon fiber and uses the method of sealing after vacuum treatment by putting carbon fiber inside the quartz glass tube, which is weak against impact.

In view of the flow of technology development, interest has been focused on technology for supplying sufficient far-infrared rays rather than wireless hair dryers, and development of wireless hair dryers is required as battery technology develops.

The technical problem to be achieved by the present invention is to provide a wireless hair dryer suitable for low power driving due to low power consumption and high emissivity.

In addition, it is to provide an eco-friendly wireless hair dryer made of carbon material capable of low power operation.

According to an embodiment of the present invention, a housing including a body portion and a head portion provided with a blower pipe therein; A battery disposed inside the body portion; A blowing fan disposed at one end of the head portion; A support that is inserted into the other end of the head and fixed inside the blower pipe; And a planar heating element composed of a carbon nanotube sheet and disposed on the support to receive power from the battery to generate heat.

The planar heating element may be made of a sheet-shaped carbon nanotube sheet having continuity.

A plurality of the supports may be provided, and the planar heating element may include a plurality of carbon nanotube sheets disposed on each of the supports.

The planar heating element may include a plurality of carbon nanotube sheets disposed at predetermined intervals apart from the support object.

The planar heating element may be arranged in a spiral shape on the support object.

The planar heating element may have an electrical conductivity of 10 ⁴ S/m or more.

The body portion may include a suction port communicating with the outside to provide an air flow path.

The body portion may include an inner layer surrounding the battery and an outer layer spaced apart from the inner layer to surround the inner layer.

The support, a body portion in which the planar heating element is wound; And a support part for supporting the body by contacting the inside of the blower tube.

The planar heating element may emit near-infrared, mid-infrared, far-infrared wavelengths and negative ions.

The planar heating element is an aggregate of carbon nanotubes, and is composed of carbon nanotubes and other unavoidable impurities excluding a binder, so that the temperature may rise from 400 to 800 degrees when power is supplied.

The planar heating element surrounds the circumference of the body part, and the upper and lower ends of the planar heating element facing on the body part are spaced apart by a predetermined distance, so that a cathode electrode and an anode electrode are provided along the edges of the upper part and the lower part. , Power may be supplied through the cathode electrode and the anode electrode.

The planar heating element may have a temperature of 800 degrees at a power of 70W.

The wireless hair dryer of the present invention consumes less power and has high emissivity, so it is suitable for low power driving.

It is also suitable for wireless driving.

In addition, it can emit far infrared rays and negative ions.

In addition, it is to provide an eco-friendly wireless hair dryer capable of driving a carbon material and low power.

Moreover, it is excellent in heat resistance.

1 is an exploded perspective view of a wireless hair dryer according to an embodiment of the present invention.

2 is a view for explaining the radiation characteristics of the planar heating element according to an embodiment of the present invention.

3 is a view for explaining the heating characteristics of the planar heating element according to an embodiment of the present invention.

4 to 9 are conceptual views of a planar heating element and a support according to an embodiment of the present invention.

10 is a conceptual diagram of a wireless hair dryer according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the constituent elements may be selectively selected between the embodiments. It can be combined with and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention are generally understood by those of ordinary skill in the art, unless explicitly defined and described. It can be interpreted as a meaning, and terms generally used, such as terms defined in a dictionary, may be interpreted in consideration of the meaning in the context of the related technology.

In addition, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form may include the plural form unless specifically stated in the phrase, and when described as "at least one (or more than one) of A and (and) B and C", it is combined with A, B, and C. It may contain one or more of all possible combinations.

In addition, terms such as first, second, A, B, (a), and (b) may be used in describing the constituent elements of the embodiment of the present invention.

These terms are only for distinguishing the component from other components, and are not limited to the nature, order, or order of the component by the term.

And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component and It may also include the case of being'connected','coupled' or'connected' due to another component between the other components.

In addition, when it is described as being formed or disposed in the "top (top) or bottom (bottom)" of each component, the top (top) or bottom (bottom) is one as well as when the two components are in direct contact with each other It also includes a case in which the above other component is formed or disposed between the two components. In addition, when expressed as "upper (upper) or lower (lower)", the meaning of not only an upward direction but also a downward direction based on one component may be included.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, but the same reference numerals are assigned to the same or corresponding components regardless of the reference numerals, and redundant descriptions thereof will be omitted.

1 is an exploded perspective view of a wireless hair dryer according to an embodiment of the present invention. Referring to FIG. 1, a wireless hair dryer 1 according to an embodiment of the present invention includes a housing 10, a battery 20, a blowing fan 30, a support 40, and a planar heating element 50. Can be configured.

The housing 10 may include a body portion 11 and a head portion 12. The housing 10 may be formed of a plastic material.

An accommodation space is provided inside the body 11 so that the battery 20 may be disposed. The outer shape of the body part 11 may be formed in a shape corresponding to that when the palm of a person is gripped. The body part 11 may include an inlet 13 communicating with the outside to provide an air flow path. . The lower end of the body 11 is provided with a suction port 13 that communicates the inside and the outside so that air can flow in and out. Air introduced into the housing 10 along the inlet 13 may move to the blower pipe 14 of the head 12 by the operation of the blower fan 30.

For example, the suction port 13 may be provided on the side of the lower end of the body 11 or may be provided on the bottom of the body 11. In the case of a wired hair dryer, an electric wire is essentially arranged at the lower end of the body 11. However, since the wireless hair dryer 1 in the embodiment can receive power through the battery 20 installed therein, the suction port 13 may be provided at the lower end of the body 11.

The body portion 11 may include an inner layer 15 surrounding the battery 20 and an outer layer 16 surrounding the inner layer 15 spaced apart from the inner layer 15 by a predetermined distance. An air layer 17 having a predetermined space is formed between the inner layer 15 and the outer layer 16 of the body 11 to reduce the heat generated from the battery 20 from moving to the outside of the body 11 I can make it. Air introduced through the side and lower surfaces of the body 11 may move to the head 12 by the operation of the blowing fan 30.

That is, in the wireless hair dryer 1 according to the embodiment, the battery 20 is provided inside the body 11 held by the user, so that the wireless hair dryer 1 can operate wirelessly while being charged. In addition, by providing an air layer having a predetermined space between the inner layer 15 and the outer layer 16 surrounding the battery 20, it is possible to reduce heat transferred from a portion held by the user when the battery 20 generates heat.

The head portion 12 has a cylindrical shape and an accommodation space is provided therein, so that the blower pipe 14 may be disposed. By the operation of the blower fan 30, the air inside the housing 10 may move along the blower pipe 14 and be discharged to the outside through a discharge port 18 provided at the end of the head 12. Battery 20 May be disposed inside the body portion 11. A plurality of batteries 20 may be arranged in series or in parallel. The battery 20 may be electrically connected to the blowing fan 30 and the planar heating element 50 to supply power to each.

The type and number of the batteries 20 may be variously arranged according to the resistance and characteristics of the planar heating element 50. For example, the battery 20 may be a lithium ion battery. However, unlike this, various secondary batteries may be used as a battery according to the heating characteristics of the planar heating element 20.

The battery 20 cannot obtain a required amount of heat unless it is set in consideration of the resistance of the heating element. If the resistance of the heating element is too low, too much current flows, limiting the amount of current that can be drawn from the battery 20, making it difficult to implement the wireless hair dryer 1, and even if implemented, the number of batteries 20 increases. The weight and volume of the dryer are greatly increased, which undermines the advantages of the wireless hair dryer (1). When the resistance of the heating element is high, the applied voltage increases and the number of batteries required is increased, resulting in an increase in the weight and volume of the dryer. In addition, in the case of using the booster circuit, since the side effects of energy loss and heat generation are experienced, the resistance of the heating element is closely related to the performance of the battery 20 to be used. The present invention has a technical effect that the amount of heat required by the hair dryer can be secured with only the power output from the battery 20 by configuring the wireless hair dryer 1 using the planar heating element 30 composed of only carbon nanotube sheets. . That is, in the case of a conventional wireless hair dryer, the temperature of the heating element rises to 210 degrees at a power of 600W, but it is not suitable as a hair dryer. On the other hand, the wireless hair dryer 1 according to the embodiment of the present invention has a technical effect that the temperature of the planar heating element can be increased from about 70 W to 800 degrees, so that the amount of heat required by the hair dryer can be sufficiently secured with only a commercially available battery There is.

The blowing fan 30 may be disposed at one end of the head 12. The blowing fan 30 may be disposed at one end of the head portion 12 adjacent to the body portion 11. The blowing fan 30 may operate by receiving power through the battery 20. The blowing fan 30 may rotate by receiving power to move the air inside the housing 10 through the blowing pipe 14.

The support 40 may be inserted into the other end of the head portion 12 and fixed inside the blower pipe 14. The support 40 may be disposed along the longitudinal direction of the blower pipe 14. For example, the support 40 may be made of a material such as heat-resistant imide or glass.

The support 40 may include a body part 41 on which the planar heating element 50 is wound, and a support part 42 that contacts the inside of the blower pipe 14 to support the body. The body part 41 is a part where the planar heating element 50 is wound, and may have a "X" shape so that a contact surface between the planar heating element 50 and air is maximized. The body part 41 extends along the longitudinal direction of the blower pipe 14. The length of the body part 41 may be equal to or smaller than the length of the air blower 14. The body part 41 and the inside of the blower pipe 14 are spaced apart by a predetermined distance. Accordingly, air may move along the upper and lower surfaces of the planar heating element 50 wound around the body part 41.

The support part 42 may be formed at both ends of the body part 41. In the support portion 42, two pillars may be formed in an X-shape. Each of the pillars constituting the support portion 42 directly contacts the inner diameter of the blower pipe 14 so that the support 40 is inside the housing 10 To be fixed in.

The planar heating element 50 is composed of a carbon nanotube sheet and is disposed on the support 40 to receive power from the battery 20 to generate heat. The planar heating element 50 surrounds the circumference of the body part 41, and the upper and lower ends of the planar heating elements 50 facing on the body part 41 are spaced apart by a predetermined distance, so that the cathodes are respectively formed along the edges of the upper and lower ends. An electrode and an anode electrode may be provided.

The planar heating element 50 may include a sheet-shaped carbon nanotube.

The planar heating element 50 according to the embodiment of the present invention is a carbon nanotube assembly, and consists of only carbon nanotubes excluding a binder, and has very high electrical conductivity, emissivity, and heat resistance.

The planar heating element 50 according to an embodiment of the present invention comprises a direct spinning method, a forest spinning method using carbon nanotubes grown vertically on a silicon substrate, and a filter and compression after dispersing the carbon nanotube powder to prepare a sheet. Or, a graphene sheet or the like may be used.

In order to synthesize the carbon nanotube sheet, in the Example, a synthetic solution having a composition of 0.4-2.0 wt% of ferrocene and 1.4-9.0 wt% of thiophene was used, an organic solvent such as acetone and butanol. This was injected at the top of the high-temperature vertical synthesis furnace in the range of 10 to 100 ml/h, and the transfer gas (H ₂ ) was injected together with the synthesis solution at a rate of 800-2000 sccm. The temperature of the synthesis furnace was maintained in the range of 1000-1500°C, and the synthesized carbon nanotube sheet was wound in the range of 1 to 30 m/min at the lower end of the synthesis furnace.

Electrodes

51 and 52 may be formed on the generated planar heating element 50.

The planar heating element 56 may have an electrical conductivity of 10 ⁴ S/m or more, and the temperature may be increased to about 800 degrees by receiving power of about 70W.

In addition, the planar heating element 50 may emit near-infrared, mid-infrared, and far-infrared wavelengths. 2 is a view for explaining the radiation characteristics of the planar heating element according to an embodiment of the present invention. In an embodiment of the present invention, the planar heating element may have a very high emissivity. As shown in FIG. 2, the planar heating element can emit various wavelengths over near-infrared, mid-infrared, and far-infrared rays without additional additives.

A conducting wire 53 for receiving power from the outside may be connected to the

electrodes

51 and 52 of the planar heating element 50. The planar heating element 50 generates heat by receiving power through the conducting wire 53. In this case, the conducting wire 53 may be connected to the battery 20 disposed in the housing 10 to supply power to the planar heating element 50.

The planar heating element 50 according to an embodiment of the present invention has low specific heat and can be rapidly heated. 3 is a view for explaining the heating characteristics of the planar heating element according to an embodiment of the present invention. Referring to FIG. 3, when 70W of power is supplied to the planar heating element, it can be seen that the temperature rises to 800 degrees instantaneously within 3 seconds with the power connection. That is, in the planar heating element according to the embodiment, the temperature may rise from 400 to 800 degrees when power is supplied, and the temperature rises to 500 degrees or more within 3 seconds, and then continuously maintains a temperature between 500 degrees and 800 degrees. I can. Unlike general carbon nanotubes, the planar heating element according to the embodiment can generate heat at a temperature of 500 degrees or higher required for use of a wireless hair dryer. The planar heating element according to the embodiment is an aggregate of carbon nanotubes, and consists of only carbon nanotubes and other inevitable impurities excluding a binder, so that high-temperature heat required for use of a wireless hair dryer can be generated in a short time.

The planar heating element 50 according to the embodiment of the present invention may provide optimized performance for the wireless hair dryer 1 through such electrical conductivity characteristics, radiation characteristics, and heat generation characteristics.

The planar heating element 50 may be formed of a sheet-like carbon nanotube sheet having continuity. 4 is a conceptual diagram of a planar heating element and a support according to an embodiment of the present invention. Referring to FIG. 4, the planar heating element 50 may be composed of a single carbon nanotube sheet surrounding the body part 41 of the support 40. The carbon nanotube sheet surrounds the body part 41 of the support 40 by having an upper end and a lower end spaced apart by a predetermined distance. A cathode electrode 51 and an anode electrode 52 are provided along the upper and lower edges of the carbon nanotube sheet, so that the conducting wire 53 may be connected. However, unlike this, electrodes may be provided at each edge of the side end of the carbon nanotube sheet to connect the conductors, and the arrangement and shape of the electrodes may be variously changed depending on the shape of the carbon nanotube sheet and the location of the battery.

The upper surface of the planar heating element 50 is spaced apart from the air blower 14 by a predetermined distance, and the lower surface thereof is unfolded by the body part 41 and thus may have a shape wound on a roll. The air received external pressure by the blowing fan 30 may move along the upper and lower surfaces of the planar heating element 50 to discharge heat generated from the planar heating element 50 to the outside of the housing 10.

Alternatively, the support 40 inside the housing 10 may include a plurality of carbon nanotube sheets 54 in which a plurality of planar heating elements 50 are disposed. 5 is a conceptual diagram of a planar heating element and a support according to an embodiment of the present invention. Referring to FIG. 5, a plurality of “X”-shaped supporters 40 are provided in the housing 10. A carbon nanotube sheet 54 is wound around the body portion 41 of each of the supports 40. Each of the carbon nanotube sheets surrounds the body part 41 of the support 40 with the upper and lower ends spaced apart by a predetermined distance. A cathode electrode 51 and an anode electrode 52 are provided along the upper and lower edges of each of the carbon nanotube sheets, so that the conducting wires 53 may be connected. At this time, each of the carbon nanotube sheets 54 is connected in parallel to the battery 20 so that power can be efficiently supplied.

Alternatively, the planar heating element 50 may be composed of a plurality of carbon nanotube sheets 54 disposed on the support 40 at predetermined intervals. 6 is a conceptual diagram of a planar heating element and a support according to an embodiment of the present invention. Referring to FIG. 6, the planar heating element 50 may be formed of a plurality of carbon nanotube sheets 54 having a predetermined width. Each of the carbon nanotube sheets 54 may be disposed on the body portion 41 of the support 40 to be spaced apart at a predetermined interval. Each of the carbon nanotube sheets 54 surrounds the body part 41 of the support 40 by having an upper end and a lower end spaced apart by a predetermined distance. A cathode electrode 51 and an anode electrode 52 are provided along the upper and lower edges of each of the carbon nanotube sheets, so that the conducting wires 53 may be connected. The conducting wire 53 may be disposed along the length direction of the body part 41 and connected to the

electrodes

51 and 52 formed on each of the carbon nanotube sheets 54, respectively. The air received external pressure by the blowing fan 30 moves along the gap between the upper and lower surfaces of the planar heating element 50 and the carbon nanotube sheet 54 to increase the contact surface between the planar heating element 50 and the air. I can. Accordingly, the heat generated by the planar heating element 50 can be more efficiently discharged to the outside of the housing 10.

Alternatively, the planar heating element 50 may include a plurality of carbon nanotube sheets 54 disposed on the plurality of supports 40 at predetermined intervals. 7 is a conceptual diagram of a planar heating element and a support according to an embodiment of the present invention. Referring to FIG. 7, a plurality of “X”-shaped supports 40 are provided in the housing 10. The planar heating element 50 may be composed of a plurality of carbon nanotube sheets 54 having a predetermined width. The carbon nanotube sheets 54 may be spaced apart from each other with a predetermined distance on the body portion 41 of each support. Each of the carbon nanotube sheets 54 surrounds the body part 41 of the support 40 by having an upper end and a lower end spaced apart by a predetermined distance. A cathode electrode 51 and an anode electrode 52 are provided along the upper and lower edges of each of the carbon nanotube sheets, so that the conducting wires 53 may be connected. The conducting wire 53 may be disposed along the length direction of the body part 41 and connected to the

electrodes

51 and 52 formed on each of the carbon nanotube sheets 54, respectively. At this time, each of the carbon nanotube sheets 54 is connected in parallel to the battery 20 so that power can be efficiently supplied. In addition, the air, which is subjected to external pressure by the blowing fan 30, moves along the gap between the upper and lower surfaces of the planar heating element 50 and the carbon nanotube sheet 54, thereby making the contact surface between the planar heating element 50 and the air. Can increase. Accordingly, the heat generated by the planar heating element 50 can be more efficiently discharged to the outside of the housing 10.

Alternatively, the planar heating element 50 may be composed of a plurality of carbon nanotube sheets 54 disposed at predetermined intervals on a support 40 provided with a pattern on the surface of the body 41. 8 is a conceptual diagram of a planar heating element and a support according to an embodiment of the present invention. Referring to FIG. 8, the planar heating element 50 may be composed of a plurality of carbon nanotube sheets 54 having a predetermined width. An uneven pattern may be formed on the surface of the support body part 41. Each of the carbon nanotube sheets 54 may be disposed on the body part 41 of the support at a predetermined interval and spaced apart. In this case, the width of the carbon nanotube sheet 54 may be equal to or smaller than the width of the uneven shape formed on the body part 41. Accordingly, each of the carbon nanotube sheets 54 may be disposed on the body portion 41 according to a pattern having an uneven shape. Each of the carbon nanotube sheets 54 surrounds the body part 41 of the support 40 by having an upper end and a lower end spaced apart by a predetermined distance. A cathode electrode 51 and an anode electrode 52 are provided along the upper and lower edges of each of the carbon nanotube sheets, so that the conducting wires 53 may be connected. The conducting wires 53 may be disposed along the length direction of the body part 41 and connected to electrodes formed on each of the carbon nanotube sheets 54. The air received external pressure by the blowing fan 30 moves along the gap between the upper and lower surfaces of the planar heating element 50 and the carbon nanotube sheet 54 to increase the contact surface between the planar heating element 50 and the air. I can. Accordingly, the heat generated by the planar heating element 50 can be more efficiently discharged to the outside of the housing 10.

Alternatively, the planar heating element 50 may be disposed on the support 40 in a spiral shape. 9 is a conceptual diagram of a planar heating element and a support according to an embodiment of the present invention. Referring to FIG. 9, the planar heating element 50 may be composed of a single carbon nanotube sheet 54 surrounding the body part 41 of the support in a spiral shape. Slits are formed in the body part 41 of the support at predetermined intervals, so that the carbon nanotube sheet 54 penetrates. A cathode electrode 51 and an anode electrode 52 are provided along the upper and lower edges of the carbon nanotube sheet, so that the conducting wire 53 may be connected. However, unlike this, electrodes may be provided at each edge of the side end of the carbon nanotube sheet to connect the conductors, and the arrangement and shape of the electrodes may be variously changed depending on the shape of the carbon nanotube sheet and the location of the battery.

By arranging the planar heating element 50 on the support body part 41 in a spiral shape, the contact area between the planar heating element 50 and the air can be greatly increased, and the heat generated from the planar heating element 50 can be more efficiently transferred to the housing ( 10) Can be discharged to the outside.

10 is a conceptual diagram of a wireless hair dryer according to an embodiment of the present invention. Referring to FIG. 10, the wireless hair dryer 1 may be detachably mounted on the cradle 100. The cradle 100 may receive power by wire. The wireless hair dryer 1 may be automatically charged while being mounted on the cradle 100. In addition, the wireless hair dryer 1 can operate even in a mounted state. The cradle 100 includes an angle adjuster 110, so that the blowing angle can be adjusted while the wireless hair dryer 1 is mounted.

Table 1 is a table for explaining the operation results of the wireless hair dryer 1 according to an embodiment of the present invention. According to Table 1, when 230W of power was supplied, the temperature of the air discharged from the wireless hair dryer (1) was measured from 55 to 57 degrees, and when 270W of power was supplied, the air discharged from the wireless hair dryer (1). The temperature of the resulting air was measured from 60 to 61 degrees. The battery 20 used a lithium ion battery, and the wind strength was measured based on the wind strength of a commercially available wired hair dryer. When the power was 230W, the air temperature decreased due to the influence of the wind. According to the experimental results, it can be seen that the temperature of the air discharged from the wireless hair dryer 1 was measured close to 57 degrees, which is a drying temperature suitable for hair.

바람세기전력Wind power	중medium	강River	비고Remark
230W230W	5757	5555	바람영향 받음Wind affected
270W270W	6060	6161	바람 영향 없음No wind influence

Unlike wired hair dryers, wireless hair dryers are powered by batteries, so there are restrictions on the amount of energy you can use. Therefore, when the energy consumption of the heating element is large, a large amount of energy must be supplied, which causes an increase in the weight and volume of the wireless hair dryer. Heavy and large wireless hair dryers do not have great advantages over wired hair dryers. On the other hand, if the amount of battery installed in the wireless hair dryer is small, the amount of energy that can be supplied decreases and the air temperature cannot be raised sufficiently. The wireless hair dryer according to the embodiment of the present invention has the advantage of being able to discharge air of a temperature similar to 57 degrees, which is a drying temperature suitable for hair, using a commercially available lithium ion battery. In addition, there is a technical effect that it can be designed to discharge air in various temperature ranges with a desired amount of power by variously changing the resistance characteristics of the planar heating element 50 and the characteristics of the battery 20.

The term'~ unit' used in this embodiment refers to software or hardware components such as field-programmable gate array (FPGA) or ASIC, and'~ unit' performs certain roles. However,'~ part' is not limited to software or hardware. The'~ unit' may be configured to be in an addressable storage medium, or may be configured to reproduce one or more processors. Thus, as an example,'~ unit' refers to components such as software components, object-oriented software components, class components and task components, processes, functions, properties, and procedures. , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, database, data structures, tables, arrays, and variables. The components and functions provided in the'~ units' may be combined into a smaller number of elements and'~ units', or may be further divided into additional elements and'~ units'. In addition, components and'~ units' may be implemented to play one or more CPUs in a device or a security multimedia card.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can do it.

Claims

A housing including a body portion gripped by a user and a head portion provided with a blower pipe therein;

A battery disposed inside the body portion;

A blowing fan disposed at one end of the head portion;

A support that is inserted into the other end of the head and fixed inside the blower pipe; And

A wireless hair dryer comprising a planar heating element composed of a carbon nanotube sheet and disposed on the support to receive power from the battery to generate heat.
The wireless hair dryer according to claim 1, wherein the planar heating element is made of a carbon nanotube sheet in the form of a sheet having continuity.
The method of claim 1,

The support is provided in plurality,

The planar heating element is a wireless hair dryer comprising a plurality of carbon nanotube sheets disposed on each of the support.
The method according to claim 1 or 3,

The planar heating element is a wireless hair dryer comprising a plurality of carbon nanotube sheets disposed at predetermined intervals apart from the support object.
The method according to claim 1 or 3,

The planar heating element is a wireless hair dryer disposed in a spiral shape on the support object.
The method of claim 1,

The planar heating element is a wireless hair dryer having an electrical conductivity of 10 4 S/m or more.
The method of claim 1,

The body part is a wireless hair dryer including an inlet in communication with the outside to provide an air flow path.
The method of claim 1,

The body portion wireless hair dryer comprising an inner layer surrounding the battery and an outer layer spaced apart from the inner layer to surround the inner layer.
The method of claim 1,

The support,

A body portion to which the planar heating element is wound; And

Wireless hair dryer comprising a support portion for supporting the body by contacting the inside of the blower tube.
The method of claim 1,

The planar heating element is a wireless hair dryer that emits near-infrared, mid-infrared, far-infrared wavelengths and negative ions.
The method of claim 1,

The planar heating element is a carbon nanotube aggregate, and is composed of carbon nanotubes excluding a binder and other inevitable impurities, so that the temperature rises from 400 to 800 degrees when power is supplied.
The method of claim 11,

The planar heating element surrounds the circumference of the body part, and the upper and lower ends of the planar heating element facing on the body part are spaced apart by a predetermined distance, so that a cathode electrode and an anode electrode are provided along the edges of the upper part and the lower part. And a wireless hair dryer to which power is supplied through the cathode electrode and the anode electrode.
The method of claim 1,

The planar heating element is a wireless hair dryer having a temperature of 800 degrees at a power of 70W.